The named parameter 'colorTextUnSelected' isn't defined.

[boenfu]

The named parameter 'colorTextUnSelected' isn't defined.
Try correcting the name to an existing named parameter, or defining a new parameter with this name.

code at the demo

I am a newbie, I don't know much. If you have time, help me. If you don't have time, it doesn't matter, just close the question.